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The Issues and Challenges of Reducing Non-Revenue Water
Improving the efficiency of water utilities and reducing water losses are becoming top priorities in Asia, with its often-limited water resources and rapidly increasing urban population. This publication provides an up-to-date introduction to the subject matter, highlights the complexity of managing non-revenue water (NRW), offers guidance on NRW assessment, and recommends appropriate performance indicators. It is, to a large extent, based on the work of the Water Loss Specialist Group of the International Water Association in the last decade, and is amply complemented by the authors' practical experiences in Asia and in other countries around the world.
Leakage Management Technologies
This project reviewed proactive leakage management technologies used internationally, with focus on the United Kingdom (UK) and assessed the applicability of these technologies to North American Level 2 water utilities. The report considered tools and methodologies , effective and economic ways of reducing level of losses, improvement of public health protection, increasing levels of service, leakage recover, capital expenditures and more. Highlighted are Standardized IWA Water Audit, District Metered Area (DMA), Pressure Management, and Improved Leak Detection Efforts.
Dealing with the Complex Interrelation of Intermittent Supply and Water Losses
The book provides a scientific approach into appraising Intermittent Water Supply (IWS) on a global scale through the analysis of available information and data based on a structured methodology for estimating the population affected by IWS worldwide both by country and by geographical regions. The root causes and the implications of IWS are dealt with in a concise manner providing a detailed account of the reasons for resistance to change towards 24x7 supply. A major contribution of the book is in providing an understanding of water losses in the context of IWS as well as the related difficulties in leakage detection and metering under such conditions. A methodology is presented for transitioning from IWS to continuous supply covering technical, social and communication issues which are considered of paramount importance for a successful transition. Relevant case studies from across the globe are included in the book to provide evidence based information and data relating to the many and diverse challenges faced daily by water utilities operating their networks under IWS.
Leak Detection: Technology and Implementation: 2nd edition
Ageing infrastructure and declining water resources are major concerns with a growing global population. Controlling water loss has therefore become a priority for water utilities around the world. In order to improve their efficiencies, water utilities need to apply good practice in leak detection. To deal with losses in an effective manner, particularly from networks in water-scarce areas, water utility managers are increasingly turning to technology to reduce costs, increase efficiency and improve reliability. Companies that continuously invest in technology and innovation should see a positive return on investment in terms of improving daily operations and collection and analysis of netw...
Public-Private Partnerships in Infrastructure
The book provides readers with a clear understanding of infrastructure challenges, how Public‐Private Partnerships (PPP) can help, and their use in practice. Infrastructure bottlenecks are generally considered the most important constraint to growth in many countries worldwide. Historically, infrastructure projects have been financed and implemented by the state. However, owing to the fiscal resource crunch, time and cost over‐runs, and the general poor quality of publicly provided infrastructure, many emerging market governments, including India, have increasingly adopted PPPs with billions of dollars of investment riding on them. The results have been varied – from spectacular airpor...
Preparing Urban Water Use Efficiency Plans
Many communities are facing water scarcity in developing and developed countries alike. There are numerous publications and on-going research studies documenting the changes in our climate and potential for worsening shortages in our future. Meeting future potable water demands as communities continue to grow will rely heavily on using our existing water resources more efficiently. Preparing Urban Water Use Efficiency Plans provides detailed approaches to developing and implementing a water conservation plan. This book covers the broad spectrum of conservation planning for urban communities including achieving more efficiency from: Residential domestic uses Commercial and governmental facili...
The Smart Grid for Water
Smarter Water - Increase Revenue - Decrease Costs - Delight Customers - Preserve Our Most Vital Resource Solving the Water Crisis With Data Supply-side engineering - massive reservoirs, colossal water diversion schemes, pumping rivers across mountaintops, and even desalination - are relics of a bygone era in water management. The environmental and financial costs are simply too high. No supply-side solution can match the simplicity, resilience and effectiveness of a data-driven demand-side management program that reduces consumption, identifies losses, increases the life of our existing infrastructure and improves the financial capabilities of our utilities. The development of the smart grid for water is, for the first time, providing water managers with a complete understanding of not only how much water is used, but where and when. The 21st century water manager needs to manage the flow of data and information as well as the flow of water. Our future depends on it.
Non-revenue water
Non-revenue water (NRW) includes physical losses (pipe leaks) and commercial losses (illegal connections, unmetered public use, meter error, unbilled metered water, and water for which payment is not collected). NRW levels are high in many developing countries, and they can be expensive to reduce. Members of the International Water Association (IWA) Water Loss Task Force developed the Economic Level of Leakage (ELL), which outlines the optimal level of physical losses based on engineering inputs. However, the ELL approach is less useful in developing countries than in developed countries, as it ignores commercial losses, the annualized cost of water supply capacity expansion, and situations ...
Private Sector Participation in Water Infrastructure
Part of OECD Water Policy and Finance Set - Buy all four reports and save over 30% on buying separately! Many countries have sought the involvement of the private sector to upgrade and develop their water and sanitation infrastructure and improve the efficiency of water systems. However, high capital intensity, large initial outlays, long pay-back periods, immobility of assets and low rates of return generate high risks. These factors, when combined with poor initial information and weak investment environment, limit the scale of private sector participation in water and sanitation infrastructure. Recognising this, the OECD has developed practical guidance, building on the OECD Principles fo...
OECD Studies on Water Private Sector Participation in Water Infrastructure OECD Checklist for Public Action
Provides a coherent catalogue of policy directions, including appropriate allocation of roles, risks and responsibilities, framework conditions and contractual arrangements necessary to make the best of private sector participation in water infrastructure.
